Domain-Driven Design in PHP

Modeling Events

In order to describe your business Domain accurately, you'll have to work closely with Domain Experts and define the Ubiquitous Language. This requires crafting Domain concepts using Domain Events, Entities, Value Objects, and so on. When modeling Events, name them and their properties according to the Ubiquitous Language, in the Bounded Context where they originated. If an Event is the result of executing a command operation on an Aggregate, the name is usually derived from the command that was executed. It's important that the Event name reflects the past nature of the occurrence.

Let's consider our user registration feature; the Domain Event needs to represent it. The following code shows a minimal interface for a base ...